The Measurement of Viscosity of Liquids Under Tension

[+] Author and Article Information
Peter A. Kottke, Scott S. Bair, Ward O. Winer

Georgia Institute of Technology, Woodruff School of Mechanical Engineering, 350565 Georgia Tech Station, Atlanta, GA 30332-1735

J. Tribol 125(2), 260-266 (Mar 19, 2003) (7 pages) doi:10.1115/1.1537270 History: Received March 20, 2002; Revised July 30, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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Grahic Jump Location
Van der Waals fluid isotherm. Expansion using the bellows method to achieve tension would follow the path (1 to 2). The path followed using the Berthelot method would appear as a nearly vertical line 2.
Grahic Jump Location
Falling cylinder viscometer using the Berthelot method to obtain hydrostatic tension in the test liquid
Grahic Jump Location
Falling cylinder viscometer using the bellows method to obtain hydrostatic tension in the test liquid. The valve and manifold assembly for this apparatus are identical to those used for the Berthelot method apparatus and are not shown.
Grahic Jump Location
Pressure viscosity data for 143AZ fitted to Eq. (10) from 14. The lower pressure data with fitted curves are reproduced for the three highest temperatures to demonstrate the unsuitability of using such curve fits to obtain αo.



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